ok, there are two options, you can special order ND stuff from:
www.Toxicpaintball.de
I have just recieved my ND matrix bits from them, but be prepared to wait a couple of weeks for them to get it into stock for you, email:
ben@toxicpaintball.de He's been excellent with my special orders, and don't be put off by it being a German company, his english is excellent.
Secondly, I heard that LT paintball will be ND dealers soon, PM Sheriff here on the forums.
Hope that helps....